musicplayer.h Example File

/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef MUSICPLAYER_H
#define MUSICPLAYER_H

#include <QWidget>
#include <QMediaPlayer>

class VolumeButton;

QT_FORWARD_DECLARE_CLASS(QLabel)
QT_FORWARD_DECLARE_CLASS(QSlider)
QT_FORWARD_DECLARE_CLASS(QAbstractButton)
QT_FORWARD_DECLARE_CLASS(QWinTaskbarButton)
QT_FORWARD_DECLARE_CLASS(QWinTaskbarProgress)
QT_FORWARD_DECLARE_CLASS(QWinThumbnailToolBar)
QT_FORWARD_DECLARE_CLASS(QWinThumbnailToolButton)

class MusicPlayer : public QWidget
{
    Q_OBJECT
public:
    explicit MusicPlayer(QWidget *parent = nullptr);

    static QStringList supportedMimeTypes();
    static QStringList supportedSuffixes();

public slots:
    void openFile();
    void playUrl(const QUrl& url);
    void togglePlayback();
    void seekForward();
    void seekBackward();

protected:
    bool event(QEvent *event) override;
    void dragEnterEvent(QDragEnterEvent *event) override;
    void dropEvent(QDropEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;

private slots:
    void stylize();
    void updateState(QMediaPlayer::State state);
    void updatePosition(qint64 position);
    void updateDuration(qint64 duration);
    void setPosition(int position);
    void updateInfo();
    void handleError();

    void updateTaskbar();
    void updateThumbnailToolBar();

private:
    void createWidgets();
    void createShortcuts();
    void createJumpList();
    void createTaskbar();
    void createThumbnailToolBar();

    QWinTaskbarButton *taskbarButton = nullptr;
    QWinTaskbarProgress *taskbarProgress = nullptr;
    QWinThumbnailToolBar *thumbnailToolBar = nullptr;
    QWinThumbnailToolButton *playToolButton = nullptr;
    QWinThumbnailToolButton *forwardToolButton = nullptr;
    QWinThumbnailToolButton *backwardToolButton = nullptr;

    QMediaPlayer mediaPlayer;
    QAbstractButton *playButton = nullptr;
    VolumeButton *volumeButton = nullptr;
    QSlider *positionSlider = nullptr;
    QLabel *positionLabel = nullptr;
    QLabel *infoLabel = nullptr;
    QPoint offset;
    QString fileName;
};

#endif // MUSICPLAYER_H